AcrotheleAcrotretaSchizotretaLingulaGlottidiaPseudolingulaBicarinataO_apollonisO_eichwaldiExperilingulaLingulellaOepikitesUngulaPseudolingula_qEoobolusZhanatellaRowellellaBroeggeriaAulanotretaLingulellotretaLingulasmaPaterulaDysoristusOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Cusack_etal_1999a